The Research On Magnetic Force Control Component Of Compounding The Inverse Effects In PZT And GMM

The traditional contact driving motion is no longer applicative in situations, like MEMS assembly, which require high precision because of its coulomb friction. However, non-contact driving motion adopting magnetic suspension apparently has its unparalleled advantages because of its non-friction, longevity and excellent precision. The adjusting to magnetic force in traditional magnetic levitation system is mainly based on the principle of electromagnetic induction. It is restricted to be applied in occasions with high precision because of power consumption and the heat generation of its coil. The magnetic force control component of compounding the inverse effects in PZT and GMM(PZT/GMM for short) has more application prospect because the piezoelectric ceramics(PZT for short)'s capacitive character will make it produce less heat when a low frequency voltage is given to PZT and the giant magnetostrictive material(GMM for short) is under stress.The paper is mainly about the magnetic force control component of compounding the inverse effects in PZT/GMM. The main work is as follows:1. By bringing in the one dimensionality nonlinear relationship of the compounding force and magnetic, the nonlinear mathematical model is established including geometric characteristic function, dynamic magnetic conductive capacity and dynamic magnetostrictive coefficient. Then the magnetic force control component of compounding the inverse effects in PZT/GMM was designed, and the key components of the circuit were calculated in detail.2. There is no software at present that can be used to analyze the inverse magnetostrictive effect which is included in the working process of the magnetic control component. There is no software at present that can be used to analyze the inverse magnetostrictive effect which is included in the working process of the magnetic control component. Putting forward that the inverse magnetostrictive effect can be simulated by analyzing piezoelectric effect in ANSYS which is based on equivalent conversion principle of magnetoelectricity, deducing the availability of this method. Then analyzing the output character of a component combining the dynamic parametric of theoretical models that provide a new idea for the design of magnetic control components.3. As there are many factors which influence the working characteristics of the magnetic control component, a test bench for test the component has been build, the manufactured magnetic component has been analyzed, then we get the relation of the air gap, the pre-tightening force and voltage with the working characteristics. Besides, we tested the output response ability and stability of the component, which laid the foundation for further study.The paper studies magnetic force control component of compounding the inverse effects in PZT/GMM from theoretical modeling, structure design, simulation and test. A new method that can simulate the inverse magnetostrictive effect was put forward in the simulation process. The magnetic control component has the advantages of low leakage magnetic, preload adjustable characteristics, and the factors which influence component have been analyzed in the experiment. Some aspects, such as efficiency improvement of energy conversion, simplification of simulation method, for component will be deeply studied in the future.